1) What is the function of a 'Spill valve? in a cabin air supply system? Report

To spill overboard excess air delivered at S.L. and lower altitudes.

To relieve the pressure in the air supply ducting to atmosphere.

To give a heating effect.

2) What are the sources of air supply for cabin pressurization? Report

Engine bleed air only

Engine bleed air and APU only

Engine bleed air, Compressors or Blowers, APU

3) Which component must be isolated when carrying out a ground cabin pressure test? Report

Pressure relief valve.

Pressure discharge valve.

Pressure regulator controller.

4) To what position is the inward relief valve spring loaded? Report

Closed.

Open

Both position.

5) What are the types of heating system are used to heat the cabin? Report

Combustion heating and Exhaust heating

Exhaust heating and Combustion heating

Combustion heating, Exhaust Heating and Compression heating

6) A cabin pressure air leak from the front of the fuselage is Report

most desirable because it increases the air-flow.

most undesirable because of the drag created.

not effective in any way.

7) When a 'muffler' or air ducting is built around the engine exhaust system and air is directed around inside the muffler to heat up the cabin; This is known as Report

thermal heating

exhaust heating

combustion heating

8) Inward relief valves are interconnected in pressurized aircraft Report

to achieve maximum pressure differential.

to allow controlled pressure during descent.

to relieve cabin pressure and allow outside pressure to be greater.

9) In a turbo fan cold air system, the cold air flows around the heat exchanger is from Report

air bled directly from engine or through blower.

ram air with ambient weather conditions.

bled from cabin air supply duct.

10) A safety valve will normally relieve at Report

negative differential pressure.

higher differential pressure than the discharge valve.

lower differential pressure than the discharge valve.

11) Conditioned air is Report

oxygen added.

moisture removed.

temperature and pressure adjusted.

12) The principle of cabin pressurisation is Report

whilst the aircraft climbs altitude, the cabin climbs to a lower altitude.

cabin altitude will always maintain a constant differential to that of aircraft altitude.

cabin altitude climbs eventually to that of the aircraft.

13) When the cabin differential pressure has reached the required value and the height is maintained, Report

constant mass airflow is permitted through the cabin.

the pressure system ceases to function until the cabin pressure is reduced

all pressurized air is spilled to atmosphere.

14) The function of the mass airflow control valve is to Report

ensure that constant airflow out of the cabin is dictated by cabin altitude.

maintain a reasonable mass flow of air into the cabin irrespective of aircraft altitude.

ensure system operating pressure is not exceeded.

15) Cabin pressure controller maintains a pre-set cabin altitude by Report

regulating the mass flow into the cabin.

regulating the position of the inward relief valve.

regulating the position of the outflow valve.

16) If cabin height is set to lower than airfield height when the aircraft is on the ground with squat switches overridden, then the outflow valve will normally Report

remain closed.

opens.

not operate.

17) Which of the following sometimes inhibits an air conditioning pack? Report

Flap position switches.

Throttle switches.

Undercarriage switches.

18) What source of power is recommended to carry out ground pressure test? Report

A G.P.U. and A.P.U. combination.

Ground Power Unit

Aircraft engines because you can test the whole system.

19) The ventilation air in the aircraft cabin must have a minimum humidity of Report

20 percent.

30 percent.

60 percent.

20) In a Boot-Strap Air Conditioning supply system (turbo compressor air conditioning system) the source of compressed air is from Report

ram air at the wing leading edge.

gas turbine intake ram air.

gas turbine compressor bleed air.

EASA Questions Module 11 Set 4: Cabin Pressurisation

Set 1: Theory of flight

Set 2: Airframe Structures

Set 3: Aeroplanes-Fuselage

Set 4: Cabin Pressurisation

Set 5: Instruments

Set 6: Avionic system

Set 7: Avionic system

Set 8: Navigation

Set 9: Electrical Power

Set 10: Electrical System

Set 11: Battery

Set 12: Equip & Furnishing

Set 13: Fire Protection

Set 14: Fuel Systems

Set 15: Hydraulic Power

Set 16: Ice & Rain

Set 17: Flight Controls

Set 18: Flight Controls_1

Set 19: Landing Gear

Set 20: Lights

Set 21: Oxygen

Set 22: Pneumatic

Set 23: Water & Waste